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Spring rates are 29% stiffer in front and 13% softer in the rear for increased predictability and compliancy
2 – Axle Bolts
34% increase in spring stiffness in front and 11% increase in the rear (F36 / Gran Coupe)
Adpative M Suspension was introduced for the M2CS model and while the kit would "fit" the M2CS it would also need additional accelerometer mounts and hardware to complete the kit
The integrated Helmholtz resonator minimizes drone through a straight-through design with a sound-canceling port
Dinan Supplemental Ride Quality & Handling Kit - 2010-2014 BMW X5M/X6M E70/E71 BMW X5 E53 Spring rates are 29% stifferInstallation labor time is 8. 5 hrs if the supplemental ride quality & handling kit is installed by itself. Installation labor time will be negligible if installed at the same time as the corresponding Dinan Spring Set E70 E71 To fully enjoy Dinan performance spring sets we highly recommend pairing them up with our supplemental ride quality and handling kits. This additional kit includes tuned, progressive rate bump stops that maximize suspension
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